INDEX 617 



Colonies, of Alcyonaria, 160; of 

 Carchesium, 104; of Hydrozoa, 

 132; of Polyzoa, 530, 532; of 

 Protozoa, 4 ; of Rhabdopleitra, 590 ; 

 of Siphonophora, 145 ; of Syllis 

 ramosa, 246; of Tunicata, 599; of 

 Volvocina, 51 ; of Zoantharia, 163 



Colpidium, 102 



Colpoda, 102; 37 



C. steini, loi 



Columella muscle, 481 



Combinations of genes, 30 



Compasses, 567 



Compensation sac, 532, 533 



Complemental males, 341 



Compound ascidians, 600 



Compound eyes, see Eyes 



Conchostraca, 324; 317 



Conjugants, 28 



Conjugation, 26. See also Syngamy 



Contractile vacuoles, 16; oi Euglena, 

 46 ; of Heliozoa, 78 ; of Protozoa, 16 



Conns, 488, 490 



Convoluta roscoffensis, 42 ; 43, 50, 188 



C. henseni, 189 



Copepoda, 331; 291, 337 



Copidosoma gelechiae, 396 



Copromonas, 48 ; 26 



C. sub tilts, 47 



Coprozoic Protozoa, 38; 26 



Copulatory bursa, 220 



Copulatorj^ spicules, 220 



Cor allium, 16 1, 163 



C. ruhrum, 161 



Corals, of Alcyonaria, 162; of 

 Hydrocorallinae, 143 ; of Madre- 

 poraria, 163, 166-9; of Polyzoa, 532 



Cordylophora, 142 



Corethra, 390 



Corm, 298 



Cormidium, 145 



Cornularia, 160 



Corona, 564 



Corpuscles, 122. See also Blood 



Cortex, of Ciliata, 98 ; of Porifera, 

 113 ; of Protozoa, 9 



Corticata, 39 



Coryne, 467 



Cotton spinner, see Holothuria 



Course of circulation, see Circulation 

 of blood 



Covering layer in Porifera, no 



Coxa, 385 



Coxal glands, of Arachnida*, 448, 



457 ; of Arthropoda, 279 ; of Peri- 



patus, 285 

 Coxopodite, 298 

 Crangon, 372 

 Crania, 540 ; 539, 542 

 Craspedochilus, 474 

 Crinoidea, 577 ; 547 

 Crisia, 534, 537 

 Cristatella, 536 

 Crithidia, 58 ; 57, 59 

 Crop, of Gasteropoda, 485 ; of In- 



secta, 387; of Opisthobranchiata, 



494 



Crotchets, 259 



Crustacea, 291 ; 271 



Crustacean-insect-myriapod section , 

 270 



Cryptomitoses, 19 



Cryptomonadina, 46; 43, 47 



Cryptomonas, 46 



C. ovata, 47 



Cryptoniscus, 357 



C. paguri, 358 



Crystal cells, see Vitrellae 



Crystalline cone, 277 



Crystalline style, 503 



Ctenidia,47o;of Cephalopoda*, 513, 

 517, 527; of Chiton, 476; of 

 Gasteropoda*, 477, 478, 479, 490, 

 491, 494; of Lamellibranchiata*, 

 499, 500, 501, 502, 504, 507, 510, 

 512; of Mollusca, 471 



Ctenidial circulation of Lamelli- 

 branchiata, 506 



Ctenocephalus canis, 441 



Ctenophora, 170; 125 



Ctenoplana, 173 



Ctenopoda, 325 



Ctenostomata, 537 



Cucumaria, 577 ; 576 



Culex pipiens, 438 



Cumacea, 353 



Cunina, 143 



Cup-shaped organs, 265 



Cursoria, 409 



Cuspidaria, 504 



Cuticle, of Annelida, 228; of Ar- 

 thropoda, 274 ; of Crustacea, 295 ; 

 of Nematoda, 215; of Protozoa, 

 8 ; of Rotifera, 209 ; of Trematoda, 

 191 



Cuvierian organs, 575 



Cyamus, 360 



Cyanea arctica, 150 



